The formula s = 16t2 is used to approximate the distance s, in feet, that an object falls freely (from rest) in t seconds. Use this formula to solve the problem. (Round answer to the nearest tenth.)A man drops his keys off a building 1040 ft high. How long does it take the keys, falling freely, to hit the ground?
A. About 129.0 sec
B. About 8.1 sec
C. About 65.0 sec
D. About 32.5 sec
Answer: B
Mathematics
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Mathematics